import { PromptTemplate } from "@langchain/core/prompts"; export const DEFAULT_DOCUMENT_SEPARATOR = "\n\n"; export const DOCUMENTS_KEY = "context"; export const INTERMEDIATE_STEPS_KEY = "intermediate_steps"; export const DEFAULT_DOCUMENT_PROMPT = /* #__PURE__ */ PromptTemplate.fromTemplate("{page_content}"); export async function formatDocuments({ documentPrompt, documentSeparator, documents, config, }) { const formattedDocs = await Promise.all(documents.map((document) => documentPrompt .withConfig({ runName: "document_formatter" }) .invoke({ ...document.metadata, page_content: document.pageContent }, config))); return formattedDocs.join(documentSeparator); }